If you give the stackable w/d a tight space, you can fit a small powder room in a 36 x 60 space. Powder rooms are so fun because you can design it to the hilt for fit your style.

The sink pedestal/cabinet should be mounted off the floor (or a narrow base) to visually create more space. Add a tall mirrored medicine cabinet on the wall across from the toilet for storage.

Take advantage of the floor with an interesting tile and the wall across from the door with a wall treatment, art and light sconces.